Process and apparatus for repairing pavements



Dec; 14, 1926. 1,6107% T. DE LA MARE PROCESS AND APPARATUS'FOR REPAIRING PAVEMENTS Filed April 1 5 2 Sheets-Sheet 1 J1 --L. r /v? I V -J z i a m c T 4 Li Q Dec. 14. 1926. 1510,756

T. DELA MARE PROCESS AND APPARATUS FOR REPAIRING PAVEMENTS Filed April 1, -l925- Z-Shee ts-Sheet 2 Jnuewtoz JAM al bozuaq Patented Dec. 14, 19.26;

, inmate THOMAS DE LA MAB. E, OF SALT LAKE C ITY, "UTAH.

PROCESS AND APPARATUS F0352. REPAIRING PAVEMENTS.

Application filed April 1, 1925.

My invention relates to concrete construction, and has for its object to provide a new and economical method of repairing concrete pavement and the apparatus by which my method is carried out.

These objects I accomplish by my improved method, and with the apparatus illustrated in the accompanying drawings in which similar letters and numerals of reference indicate like parts throughout the several views, and as described in the specification forming a part of this application and pointed out in the appended claims.

In the drawings Figure 1 is a plan view of a casing reinforcement forming a portion of one repair block. Figure 2 is a plan view of the metal sheet used to hold the curing strips in place. Figure 3 is an inverted plan view of the shield or guard plate. Fig ure 4 is a longitudinal section of the assembled apparatus before the concrete is poured therein. Figure 5 is a plan view of the guard plate used in making the repairs in the concrete used at the frogs of railway tracks. Figure 6 is a plan view of the guard plate used in making repairs in concrete adjacent a curve in railway tracks. Figure 7 is a plan view of the guard plate used in making repairs adjacent a curve in railway tracks, and used on the opposite side of the track from the one shown in Figure 6. Figure 8 is a longitudinal section on line 8-8 of Figure 7, with the concrete in; place therein.

l/Vhen concrete is poured thin enough to fill all of the voids therein the plastic mass must be allowed to take at least the initial set before it is disturbed, and it does not fully set for several days thereafter. In the use of cement concrete for street and road paving, and specially in cities where traiiic is great, the street paving concrete must be protected until it has set before traffic can be resumed, or the blocks ofconcrete must be made and allowed to set before they are laid, otherwise the concrete will be crushed and become worthless as a pavement. My

process is a method by which concrete pav-' ing blocks may be more thoroughly re1n-' forced by adding to the commonly used reinforcements, a casing made of sheet metal having a perforated bottom and side walls to give additional strength to the finished paving block, and to also protect the block in order that it may be made and laid in one operation and traflic over the pavement re Serial No. 19,832.

sumed as soon as the concrete is poured.

Also to give a form to concrete blocks as constructed by my method which said blocks to be used contiguous the rails of street railways at the frogs and curves in said tracks as well as where the tracks are straight. And to allow repairs'to be made in the edges of paving adjacent the rails whereby that porconcrete. Also to allow repairs to'be made in concrete paving and not impede traffic thereover except while pouring the concrete, and by my method to allow the full setting of the concrete without the usual delay in traffic.

My method of repairing concrete pavement is to pour plastic cement concrete into a sheet metal mold or casing 1, having a perforated bottom and side walls. Reinforcing wire 2 is passed through holes in the sides of said casing and fastened medially in place. Then placing said mold 1 in the o sition where the repair in apavementis to be made, I fill it with plastic cement con crete. The side walls taper inwardly to ward each other and the space between adjacent walls is filled with plastic asphalt. When the top of said plastic mass is struck 0r leveled a thin piece of light fabric, such as sheeting is spread over the upper face of the plastic mass and a similarly shaped thin metal sheet at having countersunk holes 5 therein, is placed on said sheeting. Threaded holes 6 are bored in the corners of said plate 7 has countersunk holes 8 therein some. of which are adapted to be in ahnement withthe holes 5 of the sheet 4 when said guard plate is secured thereto, and said holes 5 and 8 are to allow water'to reach the concrete block and keep it moist during the setting time. Holes 9 are bored through the said removing them from over the concrete patch when it has fully set. The edges of said guard plate 7 are beveled to allow tratfic to pass thereover when it is in use to protect the concrete patch during the setting period.

In Figure 5 I have shown a modification as to the form of the apparatus, which form is used at frogs in the tracks of railways in city streets, and in Figures 6 and 7 I have shown modifications as to the form of the apparatus to be used at curves of tracks.

In using my method of repairing concrete pavement not contiguous to railway tracks the crushed or otherwise damaged pavement is dug away and the metal reinforcement is placed in said hole, the plastic concrete is then poured into and filling the hole and pounded to closely surround the reinforcement and on the same plane as the surrounding pavement, the fine meshed fabric 3 is spread over the freshly poured concrete, and the thin metal sheet at is placed over the said lighter fine fabric with the countersunk holes 5 flared upwardly, and then guard plate 7 placed on the thin sheet 4: with its downwardly flanged edge fitting over the margin of said sheet 4:, and with the holes 8 in alinement with some of the holes 5 of the sheet, as shown in Figure 8. When the concrete has had its initial setting, the hook eyes 10 are screwed into the threaded holes 9 of the guard plate and said plate is removed and a piece of burlap or other coarse mesh fabric is placed between the sheet l and plate 7, and the guard plate replaced over the sheet at, and water may bethen poured or allowed to flow through the alined holes 8 and 5 to keep the fabrics and concrete moist until final setting has taken place. Then by screwing the said hook-eyes 10 into both the sheet 4 andplate the apparatus may be removed for use elsewhere. The said hook eyes 10 are used only when it is desired to remove one or both of said sheets. By using one or more of said sheets 4 and plates 7, placed edge to edge, any sized patch or repair may be made in a pavement. The same steps and method of procedure is used when repairing along the tracks of street railways, using the required modified forms of apparatus shown in Figures 5, 6 and 7 as required. when'laying pavement adjacent the rails of tracks brick, stone blocks, and concrete blocks have been laid as a part of the pave- IIeretofore ment and in replacing the cross ties to which the rails are secured, such brick, or blocks must be removed before the old ties can be taken out and newties placed under the rails. The ballast around and under the cross ties must also be taken out, and to do such work the traffic over the pavement must be stopped and the holes in the pavement guarded. With my improved method and apparatus the repairs may be easily and quickly made by taking out one or more of the reinforced concrete blocks, and replacing it, first by placing the metal mold 1 across and resting on the ends of two or more ties and pouring the plastic concrete therein, and protecting and curing the concrete by the fabric, sheet 4 and guard plate 7 as fully set out above.

Having thus described my method and the apparatus by which it is carried out I desire to secure by Letters Patent and claim 1. A method of repairing pavement which consists of placing a sheet metal mold having reinforcing wires secured through its wall in the hole of the pavement, then pouring plastic c ncrete into said mold and enough to fill the hole in the pavement to its general face, curing said concrete by moisture applied on its upper face and held contiguous its s'des and lower face, and protecting the upper surface of said concrete from injury thereto until it has fully set.

2. A method of repairing pavement consisting of filling the hole in pavement with plastic concrete, placing a thin porous flexible sheet over the said plastic concrete, covering'the said flexible sheet with a perforated thin metal sheet, placing another porous sheet on the upper face of said metal sheet, and securing a perforated guard plate to said netal sheet.

3. A method of repairing pavementwhich THO-HAS DE LA MAR-E. 

